45# Steel Spur Gears

A Spur Gear is the most basic and widely utilized gear type in mechanical engineering, characterized by cylindrical wheels with straight, parallel teeth. The Spur Gear transmits motion and power between parallel shafts with an exceptionally high degree of efficiency, often exceeding 99%. Because the teeth are parallel to the shaft axis, the Spur Gear generates absolutely zero axial thrust. This drastically simplifies the bearing selection process and reduces structural stress on the gearbox housing. Precision-machined from 45# carbon steel and subjected to quenching and tempering, the Spur Gear offers an excellent balance of surface hardness and core toughness. While they can be noisier than helical gears at high speeds, the Spur Gear remains the most cost-effective and reliable choice for standard industrial gearboxes, agricultural machinery, and low-speed automated conveyors.